Summary
mail-s7.1gb.ru has four IP numbers. All of them are on the same IP network.
s7.in-solve.ru point to the same IP.
1gb.ru,
cox.ru,
hrg.ru,
kce.ru,
ck7.ru and at least 100 other hosts use this as a mailserver.
1gb.ru is a domain controlled by two nameservers at
1gb.ru themselves. They are on different IP networks. Incoming mail for
1gb.ru is handled by one mailserver having a total of four IP numbers. All of them are on the same IP network.
1gb.ru has one IP number.
mail-s7.1gb.ru is hosted on four servers in Russian Federation.